D
David R. Smith
Researcher at Duke University
Publications - 891
Citations - 102589
David R. Smith is an academic researcher from Duke University. The author has contributed to research in topics: Metamaterial & Antenna (radio). The author has an hindex of 110, co-authored 881 publications receiving 91683 citations. Previous affiliations of David R. Smith include Brunel University London & Princeton University.
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Experimental and theoretical results for a two‐dimensional metal photonic band‐gap cavity
TL;DR: In this paper, the authors demonstrate that a two-dimensional lattice of metal cylinders can form a complete photonic band-gap (PBG) structure, which exhibits a single broad PBG extending from zero frequency to a threshold frequency, above which all modes may propagate in some direction.
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Magnetic Metamaterial Superlens for Increased Range Wireless Power Transfer
Guy Lipworth,Joshua F. Ensworth,Kushal Seetharam,Da Huang,Jae Seung Lee,Paul Schmalenberg,Tsuyoshi Nomura,Matthew S. Reynolds,David R. Smith,Yaroslav A. Urzhumov +9 more
TL;DR: The impact of a magnetic metamaterial (MM) superlens on long-range near-field WPT is demonstrated, quantitatively confirming in simulation and measurement the conditions under which thesuperlens can enhance power transfer efficiency compared to the lens-less free-space system.
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Transformation-optical design of sharp waveguide bends and corners
TL;DR: In this article, the authors describe the use of finite embedded coordinate transformations to design a medium that can be incorporated into a waveguide bend or corner, rendering the structure reflectionless.
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Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves
Hou-Tong Chen,Sabarni Palit,Talmage Tyler,Chris Bingham,Joshua M. O. Zide,John F. O'Hara,David R. Smith,Arthur C. Gossard,Richard D. Averitt,Willie J. Padilla,Nan Marie Jokerst,Antoinette J. Taylor +11 more
TL;DR: In this paper, the authors demonstrate fast electrical modulation of freely propagating terahertz waves at room temperature using hybrid metamaterial devices fabricated on doped semiconductor epitaxial layers.
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Nanogap-enhanced infrared spectroscopy with template-stripped wafer-scale arrays of buried plasmonic cavities.
TL;DR: Because of the wafer-scale manufacturability, single-digit-nanometer control of the gap size via ALD, and long-term storage enabled by template stripping, the buried plasmonic nanocavity substrates will benefit broad applications in sensing and spectroscopy.